Samsung G19P manual Kensington Lock, For using a locking device, contact the place of purchase

(The configuration at the back of the monitor may vary from product to product.)

POWER IN	Connect the power cord for your monitor to the power port on the back
	of the monitor.
DVI IN	Connect the DVI Cable to the DVI IN port on the back of your monitor.
RGB IN	Connect the signal cable to the 15-pin, D-sub port on the back of your
	monitor.
Kensington Lock	The Kensington lock is a device used to physically fix the system to
	something when using it in a public place. (The locking device has to
	be purchased separately.)
	For using a locking device, contact the place of purchase.

See Connecting the Monitor for further information regarding cable connections.